JP2021503833A - Communication method, network device, and terminal device - Google Patents

Abstract

This application provides a network device-based communication method, in which channel resources are divided according to specific rules. This method is a step of determining at least two channels by a network device, and the interval between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier interval or the resource block RB interval. Includes a step that is a positive integer multiple of, and a step of communicating by a network device by using at least one of two channels. Channel resource partitioning is determined based on the spacing between the center frequencies of two adjacent channels, implementing adaptation to application scenarios where bandwidth is flexible.

Description

This application relates to the field of wireless communication technology. In particular, it relates to a communication method, a network device, and a terminal device in a wireless communication system.

The rapid development of wireless communication technology has distorted frequency resources and is driving the search for unlicensed frequency bands. Each of the 3GPPs has License Assisted Access (LAA) technology and Release-13 (Release-) to maximize the use of unlicensed spectrum resources with the help of licensed spectrum. It introduces enhanced license assist access (enhanced LAA, eLAA) technology in 13, R-13) and Release-14 (Release-14, R-14). In the future 5th-generation, 5G new radio (NR), the use of unlicensed spectrum and flexible bandwidth will also meet service requirements and improve the user experience. Is an indispensable technical means. From this point of view, a bandwidth division method needs to be introduced.

Embodiments of this application provide communication methods, network devices, and terminal devices, and propose channel resource partitioning methods to adapt to application scenarios in which bandwidth is flexible.

To achieve the above objectives, embodiments of this application provide the following technical solutions.

According to the first aspect, this application provides a network device-based communication method. Here, channel resources are divided according to specific rules. The method is a step of determining at least two channels by a network device, where the spacing between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier spacing or a resource block. block, RB) includes a step that is a positive integer multiple of the interval and a step of communicating by using at least one of two channels by the network device.

The default rule is that the spacing between the center frequencies of two adjacent channels is determined based on the channel bandwidth and subcarrier spacing, or the spacing between the center frequencies of two adjacent channels is the channel bandwidth. It is determined based on the width and the resource block RB interval.

The rules of the above provisions are applicable to scenarios where channel bandwidth and subcarrier spacing, or channel bandwidth and RB spacing change dynamically, so that more flexible resource configurations can be implemented.

According to the second aspect, this application provides a terminal device-based communication method. The method is a step of searching for a synchronization signal from a network device by a terminal device to perform random access, and a step of communicating on at least one channel by the terminal device when accessing the network device. ,including. Here, the interval between the center frequencies of at least one channel and another adjacent channel configured by the network device is a positive integer multiple of the subcarrier interval or a positive integer multiple of the resource block RB.

を満たしており、

である。 In a possible design, the spacing between the center frequencies of two adjacent channels in at least two channels is the following equation:

Meet and

Is.

Nominal channel spacing represents the spacing between the center frequencies of the two channels, BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately, and BW _CR represents the channel raster. , SCS represents the subcarrier spacing, and LCM (BW _CR, SCS) represents the least common multiple of BW _CR and SCS.

または、

または、

または、

または、

である。 In another possible design, the spacing between the center frequencies of two adjacent channels satisfies one of the following equations:

Or

Or

Or

Or

Is.

または、

である。 In yet another possible design, the spacing between the center frequencies of two adjacent channels in at least two channels satisfies the following equation:

Or

Is.

The nominal channel spacing represents the spacing between the center frequencies of the two channels, the BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately, the BW _CR represents the channel raster, and the BW _RB represents the channel raster. It represents the RB interval, and LCM (BW _CR, BW _RB ) represents the least common multiple of BW _CR and BW _RB .

または、

または、

である。 In a possible design, the spacing between the center frequencies of two adjacent channels satisfies one of the following equations:

Or

Or

Is.

According to a third aspect, this application provides a network device. Network equipment includes a processor and a transceiver connected to the processor by using a bus. Here, at least two channels are determined. The interval between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier interval or a positive integer multiple of the resource block RB interval. The transceiver is then configured to communicate by using at least one of at least two channels.

According to a fourth aspect, embodiments of this application provide communication equipment. The synchronous signal transmitting device has a function of mounting a network device in the embodiment of the above-mentioned method. This feature may be implemented by hardware or by hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

According to a fifth aspect, embodiments of this application provide a terminal device. The terminal device includes a transceiver and a processor. Here, the transceiver is configured to search for synchronization signals from network devices to perform random access. The processor is configured to control the transceiver to communicate on at least one channel when accessing the network device. Here, the interval between the center frequencies of at least one channel and another adjacent channel configured by the network device is a positive integer multiple of the subcarrier interval or a positive integer multiple of the resource block RB.

According to a sixth aspect, embodiments of this application provide communication equipment. The synchronous signal transmitting device has a function of mounting the network device in the embodiment of the above-mentioned method. This feature may be implemented by hardware or by hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

According to a seventh aspect, embodiments of this application provide a computer-readable storage medium containing instructions. When the instructions are executed on the computer, the computer allows the method to be performed according to the first or second aspect.

According to the eighth aspect, a computer program product including instructions is provided. When the computer program product is run on the computer, the computer is capable of performing the method according to the first or second aspect.

In addition, for the technical effect on the eighth aspect brought about by any design method of the second aspect, see the technical effect brought about by the different design method of the first aspect. Details are not described here again.

These or other aspects of the invention are clearer and more comprehensible in the description of the embodiments below.

FIG. 1 is a schematic diagram of a possible network architecture according to one embodiment of this application. FIG. 2 is a simplified schematic of a communication procedure according to one embodiment of this application. FIG. 3 is a schematic interaction flow chart of the method according to one embodiment of this application. FIG. 4 is a simplified schematic diagram of channel division according to one embodiment of this application. FIG. 5 is a simplified schematic diagram of channel division according to another embodiment of this application. FIG. 6 is a simplified schematic diagram of channel division according to another embodiment of this application. FIG. 7 is a simplified schematic diagram of the channel division according to another embodiment of this application. FIG. 8 is a simplified schematic diagram of a network device according to one embodiment of this application. FIG. 9 is a simplified schematic diagram of a terminal device according to one embodiment of this application.

The resource display method provided in this application will be described below with reference to the accompanying drawings.

FIG. 1 is a simplified schematic diagram of the network architecture to which the embodiments of this application apply. The network architecture may be the network architecture of a wireless communication system and may include network devices and terminal devices. Network devices and terminal devices are connected by using wireless communication technology. It should be noted that the quantity and form of the terminal and network devices shown in FIG. 1 do not constitute a limitation for the embodiments of this application. In different embodiments, one network device may be connected to one or more terminal devices. The network device may also be connected to the core network device. And the core network device is not shown in FIG.

The wireless communication systems referred to in the embodiments of this application are, but are not limited to, narrow band-internet of things (NB-IoT), global systems for mobile communications (global). system for mobile system (GSM), enhanced data rate for GSM evolution (EDGE) system, wideband code division multiple access (WCDMA) system, code division multiple access 2000 ( code division multiple access (CDMA2000) system, time division-synchronization code division multiple access (TD-SCDMA) system, long term evolution (LTE) system, 5th generation mobile communication system , And future mobile communication systems.

In an embodiment of this application, the network device described above is a device deployed in a radio access network to provide a wireless communication function to a terminal device. Network devices are, but are not limited to, base stations (BS), network controllers, transmission and reception points (TRPs), mobile switching centers, Wi-Fi. Including wireless access points, etc. For example, a device that communicates directly with a terminal device through a wireless channel is generally a base station. The base station may include a macro base station, a micro base station, a relay point, an access point, a remote radio unit (RRU), and the like in various forms. Indeed, wireless communication with the terminal device may instead be performed by another network device having wireless communication capabilities. This is not uniquely limited in this application. It should be noted that in different systems, devices with base station functionality can have different names. For example, in an LTE network, the device is referred to as an LTE radio base station (evolved NodeB, eNB, or eNodeB), and in a 3rd generation (3rd generation, 3G) network, the device is NodeB.
Called (NodeB) etc., and in 5G networks, the device is referred to as 5G gNB (NR NodeB, gNB).

The terminal device is also referred to as a user device (UE), a mobile station (MS), a mobile terminal (MT), and the like. Then, a device that provides voice and / or data communication to the user, for example, a handheld device, an in-vehicle device, a wearable device, or a computing device having a wireless connection function, or another processing device connected to a wireless modem. Is. Currently, for example, terminal devices include mobile phones, tablets, notebook computers, palmtop computers, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, and extensions. Augmented reality equipment, industrial control, self-driving wireless terminals, remote medical surgery wireless terminals, smart grid wireless terminals ), Wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc.

In this application, the nouns "network" and "system" may be used interchangeably, and the nouns "channel" and "carrier". May be used interchangeably. Those skilled in the art can understand the meaning of these nouns. In addition, the LTE system is referenced for English abbreviations herein, and English abbreviations can change as networks evolve. See the definition of evolutionary standards for specific evolution.

FIG. 2 is a simplified schematic flow chart of a method for configuring channel resources by network devices in a wireless communication process.

The network device divides the channels and determines at least two channels. Here, the spacing between two adjacent center frequencies in at least two determined channels is a positive integer multiple of the subcarrier spacing or a positive integer multiple of the RB spacing. The network device then performs the cell establishment or reconstruction process. The network device selects the corresponding frequency band based on at least two determined channels, and determines the synchronization signal, broadcast signal, system message, etc. to form the cells covered by the network device. .. After the cell has been established or reconfigured, the network device may send a sync signal. The terminal device searches for the synchronization signal, and after receiving it, performs synchronization and then communicates with the network device.

Next, FIG. 3 is a schematic flowchart of a channel resource configuration method according to one embodiment of this application.

Step 301: The network device determines at least two channels. Here, the spacing between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier spacing or a positive integer multiple of the resource block RB spacing.

The center frequency is the center of the spectral resource corresponding to the channel, and is also referred to as the center frequency. The center frequency of the channel is an integral multiple of the channel raster, and the channel raster is the minimum granularity of the channel partition. In different examples, the channel center frequency values are different. In one embodiment, the spacing between the center frequencies of two adjacent channels is an integral multiple of the subcarrier spacing. In another example, the spacing between the center frequencies of two adjacent channels is an integral multiple of the resource block (RB) spacing.

In this embodiment, the center frequency of the channel is already defined in the standard protocol, or the configuration of the channel is directly defined in the standard. The way the network device determines at least two channels is that the network device can determine the channel split based on the definition in the standard protocol during cell initialization or reconstruction, or defined in the standard. The channel configuration can be used directly. In addition, the channel configuration follows that the spacing between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier spacing or a positive integer multiple of the RB spacing. For example, the center frequency of a channel may be expressed in the form of a set, the details of which are described below.

In another embodiment, the way the network device determines at least two channels is that the network device can divide the channels so that it dynamically allocates the frequency band, center frequency, etc. occupied by each channel. is there. The network device may select a center frequency from a default center frequency, eg, a center frequency set as described below, and perform channel splitting. Channel splitting follows the principle that the spacing between the center frequencies of two adjacent channels in at least two channels is a positive integer multiple of the subcarrier spacing or a positive integer multiple of the RB spacing.

Step 302: The network device communicates by using at least one of the determined at least two channels and transmits a signal.

In this process, the network device may select at least one of at least two determined channels. In other words, the network device may select one channel from at least two determined channels, or the network device may select multiple channels from at least two determined channels. .. After the above configuration is complete, the network device transmits a signal, eg, a sync signal.

The network device may determine one or more channels for one terminal device, or may determine one or more channels separately for multiple terminals.

Step 303: The terminal device searches for synchronization signals from the network device to perform random access.

Step 304: The terminal device communicates with the network device on at least one channel when accessing the network device. Here, the interval between the center frequencies of at least one channel and another adjacent channel configured by the network device is a positive integer multiple of the subcarrier interval or a positive integer multiple of the resource block RB.

等式１ In one embodiment, an example is used for illustration that is between the center frequencies of two adjacent channels and the spacing is an integral multiple of the subcarrier spacing, as determined by the network device. To. The spacing (Nominal channel spacing) between the center frequencies of two adjacent channels and determined by the network device satisfies the following equation.

Equation 1

BW _{channel (1)} and BW _{channel (2)} separately represent the bandwidth of two adjacent channels, SCS represents the subchannel spacing, BW _CR represents the channel raster, and LCM (BW _CR, SCS). Represents the least common multiple of BW _CR and SCS.

等式２ In another embodiment, the spacing between the center frequencies of two adjacent channels further satisfies the following equation:

Equation 2

An example of between the center frequencies of two adjacent channels and having a spacing determined by the network device that satisfies Equation 1 is used below for further explanation. It is understood that the application method, which is between the center frequencies of two adjacent channels and whose spacing is determined by the network device and satisfies equation 2, is similar to that of equation 1. And the details will not be explained again. In this embodiment, in the resource configuration, the split is performed by using a center frequency corresponding to the maximum bandwidth supported as a center by the system. For another channel, the transmission bandwidth corresponding to the other channel is determined by the center frequency of the other channel.

等式３ When the channel raster is 100KHz (BW _CR = 100KHz) and the subcarrier spacing is either 15KHz, 30KHz, or 60KHz, it is between the center frequencies of two adjacent channels and the network. The spacing, determined by the device, satisfies the following equation:

Equation 3

An example is used for illustration where the system subcarrier spacing is 15 kHz and flexible bandwidth transmission of 20 MHz or 40 MHz is supported. It can be learned that the maximum bandwidth supported by the system is 40 MHz. In some embodiments, the RB split is performed based on the maximum system bandwidth supported by the system. With reference to FIG. 4, in one example, a channel with a bandwidth of 40 MHz can correspond to about 222 RBs. After the guard spacing is configured, the transmission bandwidth corresponding to the 40MHz bandwidth is 216 RB. The 216 RBs are symmetrically distributed on the two sides of the channel center frequency M, and the guard spacing is distributed at the two ends of the system bandwidth. For ease of explanation, in the following and in the accompanying drawings, the quantity of RB is represented by N_RB, and the 216 RBs mentioned above are numbered from RB 0 to RB 215. Has been done. In the embodiments provided in this application, it will be understood that the RB divisions and numbering are all exemplary examples. The position of the RB used for the transmission bandwidth when the required guard spacing is configured may be offset relative to the example and is not limited to the configuration method in the example.

If the network device decides to divide the system bandwidth of 40 MHz into two adjacent channels with a bandwidth of 20 MHz, the spacing between the center frequencies of the two adjacent channels is 19.8 MHz and the equation. 3 is satisfied. As shown in FIG. 4, the transmission bandwidth corresponding to each channel is 106 RBs, RB # 0 to RB # 105, and RB # 110 to RB # 215. Therefore, after the center frequency position of one channel is determined, the center frequency position of another adjacent channel may be determined.

Second, for systems with a system subcarrier spacing of 30 kHz and support for transmission in flexible bandwidths of 20 MHz, 40 MHz, 60 MHz, 80 MHz, and 100 MHz, the maximum bandwidth supported by the system is 100 MHz. After the required guard spacing is configured, the transmission bandwidth corresponding to the 100MHz bandwidth can be 273 RBs. The 273 RBs are symmetrically distributed on both sides of the channel center frequency, the guard spacing is distributed on both sides of the system bandwidth, and the center frequency is located at RB # 136.

The system may support transmission with flexible bandwidth of 20MHz, 40MHz, 60MHz, 80MHz, or 100MHz. FIG. 5 shows a resource configuration when channels having different bandwidths are combined, or a resource configuration when the system bandwidth is divided into a plurality of channels having different bandwidths.

(1) The network device may determine five channels with a bandwidth of 20 MHz. Referring to FIG. 5, after the required guard spacing is configured for 5 channels with a bandwidth of 20 MHz, the transmission bandwidth of each channel is 52 RB and the center frequency of central channel 3 is , Overlaps the center frequency of the maximum system bandwidth of 100MHz. The distance between the center frequencies of two adjacent channels is 19.8 MHz, which satisfies the requirement of Equation 3 above. For example, the center frequency is in the center, the transmission bandwidth of channel 1 is from RB # 0 to RB # 51, the transmission bandwidth of channel 2 is from RB # 55 to RB # 106, and the transmission bandwidth of channel 3 is. The width is from RB # 110 to RB # 161, the transmission bandwidth of channel 4 is from RB # 165 to RB # 216, and the transmission bandwidth of channel 5 is from RB # 220 to RB # 271. .. RB # 52 to RB # 54, RB # 107 to RB # 109, RB # 161 to RB # 164, and RB # 217 to RB # 219 are guard intervals.

(2) The network device may determine one channel with a bandwidth of 20 MHz and two channels with a bandwidth of 40 MHz. In this embodiment, the aforementioned center frequency of a channel having a bandwidth of 20 MHz can be referred to. The distance between the center frequencies of channel 6 with a bandwidth of 40 MHz and adjacent channel 1 with a bandwidth of 20 MHz is 30 MHz, and with channel 6 with a bandwidth of 40 MHz and channel 7 with a bandwidth of 40 MHz. The interval is 39.3 MHz, which satisfies the requirement of equation 3 described above. For example, the center frequency is at the center. After the required guard interval is configured, the transmission bandwidth of channel 1 is from RB # 0 to RB # 51, the transmission bandwidth of channel 6 is from RB # 56 to RB # 161, and the channel. The transmission bandwidth of 7 is from RB # 166 to RB # 271.

(3) The network device can determine a channel having a bandwidth of 20 MHz and a channel having a bandwidth of 80 MHz. In this embodiment, the aforementioned center frequency of a channel having a bandwidth of 20 MHz can be referred to. The distance between the center frequencies of channel 8 with a bandwidth of 80 MHz and adjacent channel 1 with a bandwidth of 20 MHz is 49.8 MHz, which meets the requirement of equation 3 above. For example, the center frequency is at the center. After the required guard intervals have been configured, the transmission bandwidth of channel 1 is from RB # 0 to RB # 51, and the transmission bandwidth of channel 8 is from RB # 56 to B # 272.

It will be appreciated that in another embodiment the system may further determine the combination of channels of other bandwidths. For example, the system may support channels with a bandwidth of 40 MHz and channels with a bandwidth of 60 MHz. In various channel combinations, the spacing between the center frequencies of two adjacent channels satisfies equation 3. In addition, in another embodiment, the center frequency of each of the aforementioned channels may be offset relative to the center frequency after the required guard spacing requirements have been met. Correspondingly, the position of the transmission bandwidth can also be offset.

It should be noted that this application does not impose restrictions on the relative positions of channels with different bandwidths in the aforementioned combination of channels, and is not limited to the aforementioned combinations. Other configuration methods are not described here one by one.

等式４ When the channel raster is 180KHz (BW _CR = 180KHz) and the subcarrier spacing is any of 15KHz, 30KHz, 60KHz, it is between the center frequencies of two adjacent channels, and the network device. The interval, determined by, satisfies the following equation:

Equation 4

One example in which the system supports transmission in a flexible bandwidth of 20MHz, 40MHz, 60MHz, 80MHz, or 100MHz is used for illustration. In the resource configuration, the division is performed using the center frequency corresponding to the maximum carrier bandwidth supported by the system as the center. For smaller carriers, the transmission bandwidth corresponding to the smaller carrier is determined after each center frequency is determined.

(1) The network device may determine five channels with a bandwidth of 20 MHz. The distance between the center frequencies of the two adjacent channels is 19.98 MHz, which satisfies the requirement of equation 4. After the required guard intervals have been configured for the five channels with a bandwidth of 20 MHz, the RB corresponding to the transmission bandwidth of each channel can be determined. For example, in a system satisfying equation 2, the distance between the center frequencies of two adjacent channels is 20.16 MHz.

(2) The network device may determine one channel with a bandwidth of 20 MHz and two channels with a bandwidth of 40 MHz. Here, the distance between the center frequency of a channel having a bandwidth of 20 MHz and an adjacent channel having a bandwidth of 40 MHz is 29.88 MHz. The distance between the center frequencies of two adjacent channels with a bandwidth of 40 MHz is 39.96 MHz, which meets the requirement of equation 4. For example, in a system satisfying Equation 2, the distance between the center frequencies of a channel with a bandwidth of 20 MHz and an adjacent channel with a bandwidth of 40 MHz is 30.06 MHz, and two with a bandwidth of 40 MHz. The spacing between the center frequencies of adjacent channels is 40.14 MHz.

(3) The network device can determine a channel having a bandwidth of 20 MHz and a channel having a bandwidth of 80 MHz. Here, the distance between the center frequencies of the two channels is 49.86 MHz, which meets the requirements of Equation 4. For example, in a system that meets the requirements of Equation 2, the spacing between the center frequencies of a channel with a bandwidth of 20 MHz and an adjacent channel with a bandwidth of 80 MHz is 50.04 MHz.

(4) The system bandwidth of 100 MHz can be further divided in another way. With reference to Table 4, another method of partitioning flexible bandwidth is described as an example.

It will be appreciated that the channel splitting method described above is merely an example for illustration purposes. If the above method is applied, another division method may be further determined. This is not limited in this application.

In yet another embodiment, the resource configuration method provided in this application may be further applied to high frequency scenarios. When the channel raster is 720 KHz (BW _CR = 720 KHz), the spacing between the center frequencies of the carriers of two adjacent channels meets the requirements of equation 2 or equation 3 above. In the following, equation 2 will be used as an example to illustrate the different subcarrier spacing.

等式５ When the system subcarrier spacing is 240 KHz, the spacing between the center frequencies of two adjacent channels and determined by the network device satisfies the following equation:

Equation 5

等式６ When the system subcarrier spacing is 480 KHz, the spacing between the center frequencies of two adjacent channels and determined by the network device satisfies the following equation.

Equation 6

等式７ When the system subcarrier spacing is 960 KHz, the spacing between the center frequencies of two adjacent channels and determined by the network device satisfies the following equation.

Equation 7

For example, the system bandwidth is 2.16GHz, the bandwidth utilization is 88%, and the transmission bandwidth is 1.9008GHz.

For example, the subcarrier spacing is 480 KHz, and the network device determines five channels with a bandwidth of 400 MHz. For example, referring to FIG. 6, the transmission bandwidth of 1.9008 GHz corresponds to 330 RBs. Each channel with a bandwidth of 400 MHz corresponds to 66 RBs when no guard interval is configured. When the guard spacing is configured, the transmission bandwidth corresponding to each channel with a bandwidth of 400MHz is less than 66 RBs and depends on the size of the configured guard spacing. The transmission bandwidth used for data transmission can be, for example, 65 RBs, 64 RBs, or 60 RBs. When five channels with a bandwidth of 400 MHz are determined, the interval between the center frequencies of the two adjacent channels and determined by the network device is 380.16 MHz, which is It meets the requirements of equation 6. For example, in a system satisfying equation 2, the distance between the center frequencies of two adjacent channels is 381.6 MHz.

等式８ Next, one example where the spacing between the center frequencies of the two channels and is determined by the network device is an integral multiple of the RB spacing (or what can be understood as the RB bandwidth). Is used for explanation. The spacing between the center frequencies of the two channels and determined by the network device satisfies the following equation:

Equation 8

BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately, BW _CR represents the channel raster, BW _RB represents the RB interval, and LCM (BW _CR, BW _RB ) It represents the least common multiple of BW _CR and BW _RB .

等式９ Alternatively, the spacing between the center frequencies of two adjacent channels satisfies the following equation:

Equation 9

One example, which is between the center frequencies of two adjacent channels and whose spacing is determined by the network device and the spacing satisfies equation 1, is used below for further explanation. The application method, which is between the center frequencies of two adjacent channels and whose spacing is determined by the network device and satisfies Equation 2, is similar to that in Equation 1 and It will be understood that the details are not explained again.

等式１０ When the channel raster is 100 KHz (BW _CR = 100 KHz) and the subcarrier interval is 15 KHz, the RB interval is BW _RB = 15 KHz * 12 = 180 KHz. The spacing between the center frequencies of the two adjacent channels and determined by the network device satisfies the following equation:

Equation 10

等式１１ When the channel raster is 100 KHz (BW _CR = 100 KHz) and the subcarrier interval is 30 KHz, the RB interval is BW _RB = 30 KHz * 12 = 360 KHz. The spacing between the center frequencies of the two adjacent channels and determined by the network device satisfies the following equation:

Equation 11

等式１２ When the channel raster is 100 KHz (BW _CR = 100 KHz) and the subcarrier interval is 60 KHz, the RB interval is BW _RB = 60 KHz * 12 = 720 KHz. The spacing between the center frequencies of the two adjacent channels and determined by the network device satisfies the following equation:

Equation 12

One example is used for illustration, where the subcarrier spacing is 30 KHz and transmission of flexible bandwidths of 20 MHz, 40 MHz, 60 MHz, 80 MHz, or 100 MHz is supported. Referring to FIG. 7, after the guard interval is configured, a channel with a bandwidth of 20 MHz corresponds to 52 RBs, a channel with a bandwidth of 40 MHz corresponds to 106 RBs, and a bandwidth of 60 MHz. The channel with has 162 RBs, the channel with 80 MHz bandwidth corresponds to 217 RBs, and the channel with 100 MHz bandwidth corresponds to 273 RBs. For ease of explanation, the 273 RBs are numbered from RB # 0 to RB # 272, and the center frequency of the channel with a bandwidth of 100 MHz is located at RB # 136.

(1) The network device may determine five channels with a bandwidth of 20 MHz. Referring to FIG. 7, after the required guard spacing has been configured for 5 channels with a bandwidth of 20 MHz, the transmission bandwidth of each channel is 52 RB and the center frequency of the intermediate channel is It overlaps the center frequency of the maximum system bandwidth of 100MHz. The distance between the center frequencies of two adjacent channels is 19.8 MHz, which meets the requirement of equation 10 above. For example, the center frequency is at the center. After the guard interval is configured, the transmission bandwidths of the five channels are RB # 0 to RB # 51, RB # 55 to RB # 106, RB # 110 to RB # 161, and RB #, respectively. From 165 to RB # 216, and from RB # 220 to B # 271. In another embodiment, in a system satisfying equation 8, the distance between the center frequencies of two adjacent channels is 21.6 MHz.

(2) The network device may determine one channel with a bandwidth of 20 MHz and two channels with a bandwidth of 40 MHz. Here, the distance between the center frequency of a channel having a bandwidth of 20 MHz and an adjacent channel having a bandwidth of 40 MHz is 29.7 MHz. The distance between the center frequencies of two adjacent channels with a bandwidth of 40 MHz is 39.6 MHz, which meets the requirement of equation 10. For example, the center frequency is at the center. After the guard interval is configured, the transmission bandwidths of the three channels are RB # 0 to RB # 51, RB # 55 to RB # 160, and RB # 165 to RB # 270, respectively. Is. In another embodiment, in a system satisfying equation 8, the distance between the center frequencies of a channel with a bandwidth of 20 MHz and an adjacent channel with a bandwidth of 40 MHz is 31.5 MHz and two adjacent channels. The spacing between the center frequencies of the 40MHz channel is 41.4MHz.

(3) The network device can determine a channel having a bandwidth of 20 MHz and a channel having a bandwidth of 80 MHz. Here, the distance between the center frequencies of the two channels is 49.5 MHz, which satisfies the requirement of equation 10. For example, the center frequency is at the center. After the guard interval is configured, the transmission bandwidths of the two channels are RB # 0 to RB # 51 and RB # 55 to RB # 271, respectively. In another embodiment, in a system satisfying equation 8, the spacing between a channel with a bandwidth of 20 MHz and an adjacent channel with a bandwidth of 80 MHz is 51.3 MHz.

(4) It will be understood that 100MHz can be further divided in multiple ways. With reference to Table 2, one example of another form relating to channel combinations in flexible bandwidth is described. For the RB configuration for each channel combination, refer to the method described above. Details are not described here again.

The following separately explains, by using one example, that the relative positions of the values in any set of center frequencies for the channel bandwidth satisfy the above equation. The following center frequency sets are predefined in the standard protocol, and network devices can communicate by using the center frequencies within the set. The center frequencies of the uplink and downlink channels meet the following requirements.
F _DL = F _{DL_low} +0.1 (N _{DL ―} N _{offs_DL} )
F _UL = F _{UL_low} +0.1 (N _UL- N _{offs_UL} )

F _DL represents the downlink carrier frequency, F _UL represents the uplink carrier frequency, and N _DL represents the absolute universal terrestrial radio access network (E-UTRA) absolute radio frequency channel. it represents the number (E-UTRA absolute radio frequency channel number, EARFCN), and, N _UL represents an uplink EARFCN. For example, the range of parameter values in the above equation is as follows.

The channel center frequency is selected from any one or combination of the following sets:

In the 5 GHz frequency band, the subcarrier spacing is either 15 kHz, 30 kHz, or 60 kHz. For example, if the channel band width is 40 MHz, then any channel center frequency set includes at least:

Set 1:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47190 (F _DL = F _UL = 5190MHz), 47590 (F _DL = F _UL = 5230MHz), 47990 (F _DL = F _UL = 5270MHz), 48390 (F _DL = F _UL = 5310MHz), 50390 (F _DL = F _UL = 5510MHz), 50790 (F _DL = F _UL = 5550MHz), 51190 (F _DL = F _UL = F _UL) = 5590MHz), 51590 (F _DL = F _UL = 5630MHz), 51990 (F _DL = F _UL = 5670MHz), 52390 (F _DL = F _UL = 5710MHz)}

Using n = 47190 as an example, the value of n may be offset by ± 2 and may be, for example, n-2, n-1, n + 1, or n + 2. If the value of n is n-2 = 47188, then F _DL = F _UL = 5189.8 MHz. If the value of n is n-1 = 47189, then F _DL = F _UL = 5189.9 MHz. If the value of n is n + 1 = 47191, then F _DL = F _UL = 5190.1 MHz. If the value of n is n + 2 = 47192, then F _DL = F _UL = 5190.2MHz. Similarly, a range of more values can be obtained from set 1. A center frequency set with a channel bandwidth of 40 MHz and a center frequency set with the following other channel bandwidths:

＝３９．９ＭＨｚ In addition, in one example where the carrier center frequency value is 5190 MHz, that is, in the above set 1, the center frequency value corresponding to n = 47190 is 5190 MHz, and the two adjacent channels are in the band of 40 MHz. Those with width are used for illustration. That is, BW _{channel (1)} = 40 MHz, BW _{channel (2)} = 40 MHz, and BW _CR = 100 KHz. If the SCS is either 15KHz, 30KHz, or 60KHz, it can be learned that the carrier spacing between two adjacent channels is less than or equal to according to equation 3.

= 39.9MHz

Therefore, the center frequency of another 40MHz channel is 5229.9MHz. Channel configurations can be obtained by using similar methods and different values in the following sets.

Set 2:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 46990 (F _DL = F _UL = 5170MHz), 47390 (F _DL = F _UL = 5210MHz), 47790 (F _DL = F _UL = 5250MHz), 48190 (F _DL = F _UL = 5290MHz), 48590 (F _DL = F _UL = 5330MHz), 50190 (F _DL = F _UL = 5490MHz), 50590 (F _DL = F _UL = F _UL) = 5530MHz), 50990 (F _DL = F _UL = 5570MHz), 51390 (F _DL = F _UL = 5610MHz), 51790 (F _DL = F _UL = 5650MHz), 52190 (F _DL = F _UL = 5690MHz)}

Set 3:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 52840 (F _DL = F _UL = 5755MHz), 53240 (F _DL = F _UL = 5795MHz), 53640 (F _DL = F _UL = 5835MHz), 54040 (F _DL = F _UL = 5875MHz)}

Set 4:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53040 (F _DL = F _UL = 5775MHz), 53440 (F _DL = F _UL = 5815MHz), 53840 (F _DL = F _UL = 5855MHz), 54240 (F _DL = F _UL = 5895MHz)}

It is understood that if the channel bandwidth is 40 MHz, the channel center frequency set may be at least one of the above sets 1 to 4, or may be more than one of the above sets 1 to 4. Yeah.

For example, if the channel bandwidth is 60 MHz, any carrier center frequency set includes at least:

Set 5:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47090 (F _DL = F _UL = 5180MHz), 47690 (F _DL = F _UL = 5240MHz), 48290 (F _DL = F _UL = 5300MHz), 50290 (F _DL = F _UL = 5500MHz), 50890 (F _DL = F _UL = 5560MHz), 51490 (F _DL = F _UL = 5620MHz), 52090 (F _DL = F _UL = F _UL) = 5680MHz)}

Set 6:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47290 (F _DL = F _UL = 5200MHz), 47890 (F _DL = F _UL = 5260MHz), 48490 (F _DL = F _UL = 5320MHz), 50490 (F _DL = F _UL = 5520MHz), 51090 (F _DL = F _UL = 5580MHz), 51690 (F _DL = F _UL = 5640MHz), 52290 (F _DL = F _UL = 5640MHz) = 5700MHz)}

Set 7:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47490 (F _DL = F _UL = 5220MHz), 48090 (F _DL = F _UL = 5280MHz), 50690 (F _DL = F _UL = 5540MHz), 51290 (F _DL = F _UL = 5600MHz), 51890 (F _DL = F _UL = 5660MHz)}

Set 8:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 52940 (F _DL = F _UL = 5765MHz), 53540 (F _DL = F _UL = 5825MHz), 54140 (F _DL = F _UL = 5885MHz)}

Set 9:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53140 (F _DL = F _UL = 5785MHz), 53740 (F _DL = F _UL = 5845MHz)}

Set 10:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53340 (F _DL = F _UL = 5805MHz), 53940 (F _DL = F _UL = 5685MHz)}

It is understood that when the channel bandwidth is 60 MHz, the channel center frequency set may be at least one of the above sets 5 to 10 or may be more than one of the above sets 5 to 10. Will be done.

If the carrier bandwidth is 80 MHz, any carrier center frequency set includes at least:

Set 11:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47390 (F _DL = F _UL = 5210MHz), 48190 (F _DL = F _UL = 5290MHz), 50590 (F _DL = F _UL = 5530MHz), 51390 (F _DL = F _UL = 5610MHz), 52190 (F _DL = F _UL = 5690MHz)}

Set 12:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47190 (F _DL = F _UL = 5690MHz), 47990 (F _DL = F _UL = 5270MHz), 50390 (F _DL = F _UL = 5510MHz), 51190 (F _DL = F _UL = 5590MHz), 51990 (F _DL = F _UL = 5670MHz)}

Set 13:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47590 (F _DL = F _UL = 5230MHz), 48390 (F _DL = F _UL = 5310MHz), 50790 (F _DL = F _UL = 5550MHz), 51590 (F _DL = F _UL = 5630MHz)}

Set 14:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47790 (F _DL = F _UL = 5250MHz), 50790 (F _DL = F _UL = 5570MHz), 51790 (F _DL = F _UL = 5650MHz)}

Set 15:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53040 (F _DL = F _UL = 5775MHz), 53840 (F _DL = F _UL = 5855MHz)}

Set 16:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53240 (F _DL = F _UL = 5795MHz), 54040 (F _DL = F _UL = 5875MHz)}

Set 17:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53440 (F _DL = F _UL = 5815MHz)}

Set 18:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53640 (F _DL = F _UL = 5835MHz)}

It is understood that when the channel bandwidth is 80 MHz, the channel center frequency set may be at least one of the above-mentioned sets 11 to 18, or may be a plurality of the above-mentioned sets 11 to 18. Will be done.

When the carrier bandwidth is 100 MHz, the optional carrier center frequency set includes at least:

Set 19:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47290 (F _DL = F _UL = 5200MHz), 48290 (F _DL = F _UL = 5300MHz), 50490 (F _DL = F _UL = 5520MHz), 51490 (F _DL = F _UL = 5620MHz)}

Set 20:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47490 (F _DL = F _UL = 5220MHz), 50690 (F _DL = F _UL = 5540MHz), 51690 (F _DL = F _UL = 5640MHz)}

Set 12:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47690 (F _DL = F _UL = 5240MHz), 50890 (F _DL = F _UL = 5560MHz), 51890 (F _DL = F _UL = 5660MHz)}

Set 22:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47890 (F _DL = F _UL = 5260MHz), 51090 (F _DL = F _UL = 5580MHz), 52090 (F _DL = F _UL = 5680MHz)}

Set 23:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 48090 (F _DL = F _UL = 5280MHz), 51290 (F _DL = F _UL = 5600MHz)}

Set 24:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53140 (F _DL = F _UL = 5785MHz)}

Set 25:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53340 (F _DL = F _UL = 5805MHz)}

Set 26:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53540 (F _DL = F _UL = 5825MHz)}

Set 27:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53740 (F _DL = F _UL = 5845MHz)}

Set 28:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53940 (F _DL = F _UL = 5685MHz)}

It is understood that when the channel bandwidth is 100 MHz, the channel center frequency set may be at least one of the above sets 19 to 28, or may be a plurality of the above sets 19 to 28. Will be done.

If the carrier bandwidth is 160 MHz, then any carrier center frequency set is at least one of the following sets, or a combination of the following sets:

Set 1:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47790
(5250MHz), 50990 (5570MHz)}

Set 2:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 47590 (5230MHz), 47990 (5270MHz), 50790 (5550MHz), 51190 (5590MHz), 51390 (5610MHz) ), 51590 (5630MHz), 51790 (5650MHz)}

Set 3:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53640
(5835MHz)}

Set 4:
N _DL = N _UL = {n-2, n-1, n, n + 1, n + 2 | n = 53440
(5815MHz)}

In unlicensed frequency band application scenarios, bandwidth utilization must meet the requirements of occupied channel bandwidth (OCB) in some implementations. Structures based on non-even interlace can be used for uplink transmission. Specifically, the spacing between two adjacent RBs in a resource interlace (referred to as the interlacing spacing) is fixed, but the amount of RB contained within different interlaces is different. There is. One resource interlace contains multiple blocks of resources that are spaced apart within the system bandwidth. For example, assuming an interlaced structure is used with a system bandwidth of 106 RBs and an interlace interval of 10 RBs, 6 interlaces contain 11 RBs, and the remaining 4 interlaces. Contains 10 RBs. Specifically, for different subcarrier intervals and different system bandwidth scenarios, the interlaced interval values can be selected according to the table below. In the table, [a, b] indicates all positive integers in the closed interval from a to b, and N / A indicates that the scenario is not supported. The values in the table are calculated as follows:

Ｎ_ＲＢはシステム伝送帯域幅に対応するRBの量であり、interlace_spacingはインターレース間隔を示し、ＲＢ_{ｂａｎｄｗｉｄｔｈ}は１つのRBの帯域幅であり、ｐ_ＯＣＢは、請求される帯域幅に対するOCB規則によって要求される実際の伝送帯域幅の比率である。例えば、低周波に対応するｐ_ＯＣＢは80%であり、高周波に対応するｐ_ＯＣＢは70%であり、そして、ＢＷはシステムの帯域幅である。例えば、サブキャリア間隔は15kHzであり、そして、システム帯域幅は20MHz、すなわち、BW=20MHzである。対応する伝送帯域幅が106のRBであると仮定すると、前述の等式を満たしているインターレース間隔の値は、1、2、3、4、5、6、7、8、9、10、11、13、または15である。異なる実装において、１つまたはそれ以上の適切な値が、値の範囲から選択され得る。

N _RB is the amount of RB corresponding to the system transmission bandwidth, interlace_spacing is the interlace interval, RB _bandwise is the _bandwidth of one RB, and p _OCB is required by the OCB rules for the claimed bandwidth. Is the ratio of the actual transmission bandwidth. For example, the p _OCB corresponding to low frequencies is 80%, the p _OCB corresponding to high frequencies is 70%, and the BW is the bandwidth of the system. For example, the subcarrier spacing is 15kHz and the system bandwidth is 20MHz, ie BW = 20MHz. Assuming the corresponding transmission bandwidth is RB of 106, the interlaced interval values that satisfy the above equation are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 , 13, or 15. In different implementations, one or more suitable values may be selected from the range of values.

For another system bandwidth, in a subcarrier spacing scenario, a range of corresponding interlaced spacing values can be obtained from the table above, and then one or more values can be selected from the range of values. In a preferred implementation, in a low frequency scenario, for a 15kHz subcarrier spacing scenario, the interlaced structure with an interlacing spacing of 10 will have different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). Used against. For the 30kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 5 is used for different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). In the 60kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 2 is used for different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). In high frequency scenarios, for 60kHz subcarrier spacing scenarios, an interlaced structure with an interlacing spacing of 20 is used for different system bandwidths (eg, 100MHz, 200MHz, and 400MHz). In the 120kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 10 is used for different system bandwidths (eg, 100MHz, 200MHz, and 400MHz). In another possible implementation, in a low frequency scenario, for a system bandwidth of 20 MHz, interlaced structures with interlaced intervals of 10, 5, and 2 have subcarrier intervals of 15 kHz, 30 kHz, and 60, respectively. Used for. For 40MHz system bandwidth, interlaced structures with interlacing intervals of 20, 10, and 5 are used for 15kHz, 30kHz, and 60kHz subcarrier intervals, respectively. Interlaced structures with interlaced intervals of 15 and 7 for a system bandwidth of 60 MHz are used for subcarrier intervals of 30 kHz and 60 kHz, respectively. For 80MHz system bandwidth, interlaced structures with interlacing intervals of 20 and 10 are used for 30kHz and 60kHz subcarrier intervals, respectively. In high frequency scenarios, interlaced structures with interlaced intervals of 20 and 10 for a system bandwidth of 100 MHz are used for subcarrier intervals of 60 kHz and 120 kHz, respectively. Interlaced structures with interlaced intervals of 40 and 20 for a system bandwidth of 200 MHz are used for subcarrier intervals of 60 kHz and 120 kHz, respectively. An interlaced structure with an interlaced interval of 40 for a system bandwidth of 400 MHz is used for a subcarrier interval of 120 kHz.

Several other implementations may be selected based on system bandwidth, corresponding subcarrier spacing, and the values provided in the table below. Details are not described here again.

The above describes in detail the implementation of the communication scheme in this application. The following continues to illustrate the implementation of network and terminal devices in this application.

The implementation of the network device is described first. In certain examples, the structure of a network device includes a processor (or what is referred to as a controller) and a transceiver. In a possible example, the structure of the network device may further include a communication unit. The communication unit is configured to support communication with another network-side device, such as communication with a core network node. In a possible example, the structure of the network device may further include memory. The memory is coupled to the processor and is configured to store the program instructions and data needed for the network device.

FIG. 8 is a possible simplified schematic structural diagram of the network device in the above implementation. In the example corresponding to FIG. 8, the structure of the network device in this application includes a transceiver 801, a processor 802, a memory 803, and a communication unit 804. The transceiver 801, the processor 802, the memory 803, and the communication unit 804 are connected by using a bus.

In the downlink, the data or signal to be transmitted (including the downlink control information described above) is a transceiver 801 to output a sample and generate a downlink signal. Is adjusted by. The downlink signal is transmitted to the terminal device according to the above-described embodiment by using an antenna. On the uplink, the antenna receives the uplink signal transmitted by the terminal device of the aforementioned embodiment. Transceiver 802 tunes the signal received from the antenna and provides an input sample. In processor 802, service data and signaling messages are processed, for example, to modulate the data to be transmitted and generate SC-FDMA symbols. These units perform processing based on the radio access technology used by the radio access network (eg, access technology in LTE, 5G, and other evolved systems). In the implementation shown in Figure 7, transceiver 802 is integrated by transmitter and receiver. In another implementation, the transmitter and receiver may, in turn, be independent of each other.

Processor 802 further controls and manages the operation of the network device, performs the processing performed by the network device in the aforementioned embodiments, eg, controls the network device to process the channel configuration, and /. Alternatively, it is configured to perform another process of the techniques described in this application. In one example, processor 802 is configured to support network devices in performing the processing processes associated with the network devices of FIGS. 2-7, such as steps 301 and 302. When processor 802 is applied to an unlicensed scenario, processor 802 performs channel listening and acquires channel occupancy time through contention. For example, the processor 802 performs channel listening based on the signal received by the transceiver 802 from the antenna and controls the transceiver to transmit the signal by using the antenna to occupy the channel. In different implementations, processor 802 may include one or more processors, eg, one or more Central Processing Units (CPUs). The processor 802 may be integrated into the chip or may be a chip.

Memory 803 is configured to store related instructions and data, as well as program code and data that belong to network devices. In different implementations, memory 603 is, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read. Includes Only Memory (EPROM) or Portable Disc Read-Only Memory (CD-ROM).

It can be understood that FIG. 8 merely shows a simplified design of the network device. In a real application, the network device may include any amount of transmitters, receivers, processors, memory, etc. All network devices that can implement this application are within the scope of this application.

The implementation of the terminal device is described below. In a particular example, the structure of a terminal device includes a processor (or also referred to as a controller), a transceiver, and a modem processor. In a possible example, the structure of the network device may further include memory. The memory is coupled to the processor and is configured to store the program instructions and data needed for the network equipment.

FIG. 9 is a simplified schematic diagram of a possible design structure of the terminal device in the above-described embodiment. The terminal equipment includes a transceiver 901, a processor 902, a memory 903, and a modem processor 904. Transceiver 901, processor 902, memory 903, and modem processor 904 are connected by using a bus.

Transceiver 901 tunes the output sample (eg, performs analog conversion, filtering, amplification, and up-conversion) and produces an uplink signal. The uplink signal is transmitted to the network device in the above-described embodiment by using an antenna. In the downlink, the antenna receives the downlink signal transmitted by the base station in the above-described embodiment. Transceiver 90 tunes the signal received from the antenna (eg, performs filtering, amplification, down-conversion, and digitization) and provides input samples. For example, in the modem processor 904, the encoder 9041 receives service data and signal messages to be transmitted over the uplink and processes the service data and signal messages (eg, formatting, encoding, and interleaving on). ). The modulator 9042 further processes the encoded service data and signal messages (eg, performs symbol mapping and modulation) and provides an output sample. The demodulator 9043 processes (eg, demodulates) the input sample and provides symbol estimation. The decoder 9044 processes the symbol estimation (eg, de-interleave and decodes) and provides the decoded data and the decoded signal message to be sent to the terminal device. The encoder 9041, modulator 9042, demodulator 9043, and decoder 9044 may be implemented by a combined modem processor 704. These units perform processing based on the radio access technology used by the radio access network (eg, LTE, 5G, and access technology in other evolutionary systems). In the implementation shown in FIG. 9, the transceiver 901 is integrated by a transmitter and a receiver. In another implementation, the transmitter and receiver may, in turn, be independent of each other.

The processor 902 controls and manages the operation of the terminal device and executes the processing performed by the terminal device in the above-described embodiment. For example, processor 902 is configured to control a terminal device to perform processing and / or another process of the techniques described in the present invention based on the received paging display information. In one example, processor 902 is configured to support a terminal device in performing the processing processes associated with the terminal device in FIGS. 2-7. For example, transceiver 901 is configured to receive downlink control information transmitted by a network device by using an antenna, and processor 902 uses an antenna based on the downlink control information. It is configured to control the transceiver in order to search for and receive the sync signal. In different implementations, processor 902 may include one or more processors, eg, one or more CPUs. The processor 802 may be integrated in a chip or may be a chip.

The memory 903 is configured to store related instructions and data, as well as program code and data belonging to the terminal device. In different implementations, memory 903 is, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read. Includes Only Memory (EPROM) or Portable Disc Read-Only Memory (CD-ROM).

It can be understood that FIG. 9 merely shows a simplified design of the terminal device. In a real application, the terminal device may include any amount of transmitter, receiver, processor, memory, etc. All terminals on which this application can be implemented are within the scope of protection of this application.

All or some of the aforementioned embodiments may be implemented by using software, hardware, firmware, or any combination thereof. When software is used to implement an embodiment, the embodiment may be fully or partially implemented in the form of a computer program product. Computer program products include one or more computer instructions. When a computer program instruction is loaded and executed on a computer, a procedure or function according to an embodiment of the invention is generated in whole or in part. The computer may be a general purpose computer, a dedicated computer, a computer network, or other programmable device. Computer instructions may be stored on a computer-readable storage medium or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be wired (eg, coaxial cable, fiber optic, or digital subscriber line (DSL)) or wireless (eg, infrared, wireless, or microwave) from a website, computer, server, or data center. In a manner, it can be sent to another website, computer, server, or data center. The computer-readable storage medium may be any usable medium accessible by the computer, or a data storage device such as a server or data center that integrates one or more usable media. Usable media include magnetic media (eg floppy® disks, hard disks, or magnetic tapes), optical media (eg DVDs), semiconductor media (eg Solid State Disks, SSDs), And so on.

Those skilled in the art should be aware that in one or more of the above examples, the functionality described in this application may be achieved by hardware, software, firmware, or any combination thereof. is there. If this application is implemented by software, the function may be stored on computer readable media or transmitted as one or more instructions or codes on computer readable media. Computer-readable media include computer storage media and communication media, where communication media includes any medium that allows a computer program to be transmitted from one location to another. The storage medium may be a general purpose computer or any available medium accessible to a dedicated computer.

According to a fourth aspect, embodiments of this application provide communication equipment. The communication device has a function of mounting the network device in the embodiment of the above-mentioned method. This feature may be implemented by hardware or by hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In some implementations of unlicensed frequency band application scenarios, bandwidth utilization must meet the requirements of occupancied channel bandwidth (OCB). Structures based on non-even interlace can be used for uplink transmission. Specifically, the spacing between two adjacent RBs in a resource interlace (referred to as the interlacing spacing) is fixed, but the amount of RB contained within different interlaces is different. There is. One resource interlace contains multiple blocks of resources that are spaced apart within the system bandwidth. For example, assuming an interlaced structure is used with a system bandwidth of 106 RBs and an interlace interval of 10 RBs, 6 interlaces contain 11 RBs, and the remaining 4 interlaces. Contains 10 RBs. Specifically, for different subcarrier intervals and different system bandwidth scenarios, the interlaced interval values can be selected according to the table below. In the table, [a, b] indicates all positive integers in the closed interval from a to b, and N / A indicates that the scenario is not supported. The values in the table are calculated as follows:

For another system bandwidth, in a subcarrier spacing scenario, a range of corresponding interlaced spacing values can be obtained from the table above, and then one or more values can be selected from the range of values. In one implementation, in a low frequency scenario, for a 15kHz subcarrier spacing scenario, the interlaced structure with an interlacing spacing of 10 will have different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). Used against. For the 30kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 5 is used for different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). In the 60kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 2 is used for different system bandwidths (eg, 20MHz, 40MHz, 60MHz, 80MHz, 100MHz, and 160MHz). In high frequency scenarios, for 60kHz subcarrier spacing scenarios, an interlaced structure with an interlacing spacing of 20 is used for different system bandwidths (eg, 100MHz, 200MHz, and 400MHz). In the 120kHz subcarrier spacing scenario, an interlaced structure with an interlacing spacing of 10 is used for different system bandwidths (eg, 100MHz, 200MHz, and 400MHz). In another possible implementation, in a low frequency scenario, for a system bandwidth of 20 MHz, interlaced structures with interlaced intervals of 10, 5, and 2 have subcarrier intervals of 15 kHz, 30 kHz, and 60 kHz. Used for each. For 40MHz system bandwidth, interlaced structures with interlacing intervals of 20, 10, and 5 are used for 15kHz, 30kHz, and 60kHz subcarrier intervals, respectively. Interlaced structures with interlaced intervals of 15 and 7 for a system bandwidth of 60 MHz are used for subcarrier intervals of 30 kHz and 60 kHz, respectively. For 80MHz system bandwidth, interlaced structures with interlacing intervals of 20 and 10 are used for 30kHz and 60kHz subcarrier intervals, respectively. In high frequency scenarios, interlaced structures with interlaced intervals of 20 and 10 for a system bandwidth of 100 MHz are used for subcarrier intervals of 60 kHz and 120 kHz, respectively. Interlaced structures with interlaced intervals of 40 and 20 for a system bandwidth of 200 MHz are used for subcarrier intervals of 60 kHz and 120 kHz, respectively. An interlaced structure with an interlaced interval of 40 for a system bandwidth of 400 MHz is used for a subcarrier interval of 120 kHz.

In the downlink, the data or signal to be transmitted (including the downlink control information described above) is a transceiver 801 to output a sample and generate a downlink signal. Is adjusted by. The downlink signal is transmitted to the terminal device according to the above-described embodiment by using an antenna. On the uplink, the antenna receives the uplink signal transmitted by the terminal device of the aforementioned embodiment. Transceiver 801 tunes the signal received from the antenna and provides an input sample. In processor 802, service data and signaling messages are processed, for example, to modulate the data to be transmitted and generate SC-FDMA symbols. These units perform processing based on the radio access technology used by the radio access network (eg, access technology in LTE, 5G, and other evolved systems). In the implementation shown in Figure 7, transceiver 802 is integrated by transmitter and receiver. In another implementation, the transmitter and receiver may, in turn, be independent of each other.

Memory 803 is configured to store related instructions and data, as well as program code and data that belong to network devices. In different implementations, memory 803 is, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read. Includes Only Memory (EPROM) or Portable Disc Read-Only Memory (CD-ROM).

Transceiver 901 tunes the output sample (eg, performs analog conversion, filtering, amplification, and up-conversion) and produces an uplink signal. The uplink signal is transmitted to the network device in the above-described embodiment by using an antenna. In the downlink, the antenna receives the downlink signal transmitted by the base station in the above-described embodiment. Transceiver 901 adjusts the signal received from the antenna (eg, performs filtering, amplification, down-conversion, and digitization) and provides input samples. For example, in the modem processor 904, the encoder 9041 receives service data and signal messages to be transmitted over the uplink and processes the service data and signal messages (eg, formatting, encoding, and interleaving on). ). The modulator 9042 further processes the encoded service data and signal messages (eg, performs symbol mapping and modulation) and provides an output sample. The demodulator 9043 processes (eg, demodulates) the input sample and provides symbol estimation. The decoder 9044 processes the symbol estimation (eg, de-interleave and decodes) and provides the decoded data and the decoded signal message to be sent to the terminal device. The encoder 9041, modulator 9042, demodulator 9043, and decoder 9044 may be implemented by a combined modem processor 904 . These units perform processing based on the radio access technology used by the radio access network (eg, LTE, 5G, and access technology in other evolutionary systems). In the implementation shown in FIG. 9, the transceiver 901 is integrated by a transmitter and a receiver. In another implementation, the transmitter and receiver may, in turn, be independent of each other.

The processor 902 controls and manages the operation of the terminal device and executes the processing performed by the terminal device in the above-described embodiment. For example, processor 902 is configured to control a terminal device to perform processing and / or another process of the techniques described in the present invention based on the received paging display information. In one example, processor 902 is configured to support a terminal device in performing the processing processes associated with the terminal device in FIGS. 2-7. For example, transceiver 901 is configured to receive downlink control information transmitted by a network device by using an antenna, and processor 902 uses an antenna based on the downlink control information. It is configured to control the transceiver in order to search for and receive the sync signal. In different implementations, processor 902 may include one or more processors, eg, one or more CPUs. The processor 902 may be integrated in a chip or may be a chip.

All or some of the aforementioned embodiments may be implemented by using software, hardware, firmware, or any combination thereof. When software is used to implement an embodiment, the embodiment may be fully or partially implemented in the form of a computer program product. Computer program products include one or more computer instructions. When a computer program instruction is loaded and executed on a computer, a procedure or function according to an embodiment of the invention is generated in whole or in part. The computer may be a general purpose computer, a dedicated computer, a computer network, or other programmable device. Computer instructions may be stored on a computer-readable storage medium or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be wired (eg, coaxial cable, fiber optic, or digital subscriber line (DSL)) or wireless (eg, infrared, wireless, or microwave) from a website, computer, server, or data center. In a manner, it can be sent to another website, computer, server, or data center. The computer-readable storage medium may be any usable medium accessible by the computer, or a data storage device such as a server or data center that integrates one or more usable media. Available media include magnetic media (e.g., floppy disk, hard disk or magnetic tape), optical media (e.g., DVD), a semiconductor medium (for example, a solid state drive (Solid State where drive, SSD)), And so on.

Claims (20)

It ’s a communication method.
It is a step of determining at least two channels by a network device, and the interval between the center frequencies of two adjacent channels in the at least two channels is a positive integer multiple of the subcarrier interval or a positive resource block RB interval. Steps that are integer multiples,
A step of communicating by the network device by using one of the at least two channels.
Communication methods, including. The spacing between the center frequencies of two adjacent channels in at least the two channels is the following equation:

Meet and

In
Nominal channel spacing (Nominal channel spacing) represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
SCS represents the subcarrier interval and
LCM (BW _CR, SCS) represents the least common multiple of BW _CR and SCS.
The communication method according to claim 1. The spacing between the center frequencies of the two adjacent channels conforms to any one of equations 3 to 7 in the implementation.
The communication method according to claim 2. The spacing between the center frequencies of two adjacent channels in at least the two channels is one of the following equations:

Or

Meet and
Nominal channel spacing represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
BW _RB represents the RB interval and
LCM (BW _CR, BW _RB ) represents the least common multiple of BW _CR and BW _RB .
The communication method according to claim 1. The spacing between the center frequencies of the two adjacent channels conforms to any one of equations 10 to 12 in the implementation.
The communication method according to claim 4. It ’s a communication method.
In order to perform random access, the terminal device searches for the synchronization signal from the network device, and
A step of communicating on at least one channel by the terminal device when accessing the network device, between the center frequencies of the at least one channel and another adjacent channel configured by the network device. The interval is a positive integer multiple of the subcarrier interval or a positive integer multiple of the resource block RB.
Communication methods, including. The spacing between the center frequencies of each of the at least one channel and another adjacent channel is the following equation:

Meet and

In
Nominal channel spacing (Nominal channel spacing) represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
SCS represents the subcarrier interval and
LCM (BW _CR, SCS) represents the least common multiple of BW _CR and SCS.
The communication method according to claim 6. The spacing between the center frequencies of two adjacent channels conforms to any one of equations 3 to 7 in the implementation.
The communication method according to claim 7. The spacing between the center frequencies of each of the at least one channel and another adjacent channel is one of the following equations:

Or

Meet and
Nominal channel spacing represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
BW _RB represents the RB interval and
LCM (BW _CR, BW _RB ) represents the least common multiple of BW _CR and BW _RB .
The communication method according to claim 6. The spacing between the center frequencies of two adjacent channels conforms to any one of equations 10 to 12 in the implementation.
The communication method according to claim 9. It ’s a network device,
A processor configured to determine at least two channels, the spacing between the center frequencies of two adjacent channels in the at least two channels is a positive integer multiple of the subcarrier spacing or the resource block RB spacing. A processor that is a positive integer multiple,
A transceiver that is configured to communicate by using at least one of at least two channels.
Including network equipment. The spacing between the center frequencies of two adjacent channels in at least the two channels is the following equation:

Meet and

In
Nominal channel spacing (Nominal channel spacing) represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
SCS represents the subcarrier interval and
LCM (BW _CR, SCS) represents the least common multiple of BW _CR and SCS.
The network device according to claim 11. The spacing between the center frequencies of the two adjacent channels conforms to any one of equations 3 to 7 in the implementation.
The network device according to claim 12. The spacing between the center frequencies of two adjacent channels in at least the two channels is one of the following equations:

Or

Meet and
Nominal channel spacing represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
BW _RB represents the RB interval and
LCM (BW _CR, BW _RB ) represents the least common multiple of BW _CR and BW _RB .
The network device according to claim 11. The spacing between the center frequencies of the two adjacent channels conforms to any one of equations 10 to 12 in the implementation.
The network device according to claim 14. A terminal device that includes a transceiver and a processor.
The transceiver is configured to search for synchronization signals from network devices to perform random access.
The processor is configured to control the transceiver to communicate on at least one channel when accessing the network device, and is configured by the at least one channel and the network device. The spacing between the center frequencies of each of the adjacent channels in is a positive integer multiple of the subcarrier spacing or a positive integer multiple of the resource block RB.
Terminal equipment. The spacing between the center frequencies of each of the at least one channel and another adjacent channel is the following equation:

Meet and

In
Nominal channel spacing (Nominal channel spacing) represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
SCS represents the subcarrier interval and
LCM (BW _CR, SCS) represents the least common multiple of BW _CR and SCS.
The terminal device according to claim 16. The spacing between the center frequencies of two adjacent channels conforms to any one of equations 3 to 7 in the implementation.
The terminal device according to claim 17. The spacing between the center frequencies of each of the at least one channel and another adjacent channel is one of the following equations:

Or

Meet and
Nominal channel spacing represents the spacing between the center frequencies of two channels.
BW _{channel (1)} and BW _{channel (2)} represent the bandwidths of the two carriers separately.
BW _CR represents a channel raster
BW _RB represents the RB interval and
LCM (BW _CR, BW _RB ) represents the least common multiple of BW _CR and BW _RB .
The terminal device according to claim 16. The spacing between the center frequencies of two adjacent channels conforms to any one of equations 10 to 12 in the implementation.
The terminal device according to claim 19.

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